1823 — Maria Jane was born.

The evidence

• “Their first child, Mary Ann, born in 1821, died in infancy; Maria Jane, born in 1823, married Mr. B.”

  1908-brown-rock-county/34d-biographical-4.md, Vol. 2, PDF p. 490 / book p. 977

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources